EP3509911A1 - Trim part for a vehicle interior and method for producing such a moulded part - Google Patents

Trim part for a vehicle interior and method for producing such a moulded part

Info

Publication number
EP3509911A1
EP3509911A1 EP18782341.4A EP18782341A EP3509911A1 EP 3509911 A1 EP3509911 A1 EP 3509911A1 EP 18782341 A EP18782341 A EP 18782341A EP 3509911 A1 EP3509911 A1 EP 3509911A1
Authority
EP
European Patent Office
Prior art keywords
layer
light
light source
decorative
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18782341.4A
Other languages
German (de)
French (fr)
Other versions
EP3509911B1 (en
Inventor
Philipp Weih
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novem Car Interior Design GmbH
Original Assignee
Novem Car Interior Design GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Novem Car Interior Design GmbH filed Critical Novem Car Interior Design GmbH
Publication of EP3509911A1 publication Critical patent/EP3509911A1/en
Application granted granted Critical
Publication of EP3509911B1 publication Critical patent/EP3509911B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/50—Mounting arrangements
    • B60Q3/54—Lighting devices embedded in interior trim, e.g. in roof liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/60—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/62—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
    • B60Q3/64—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof

Definitions

  • the invention relates to a molded part, in particular a formed as a molded part decorative part and / or trim part for a vehicle interior and a method for producing such a molded part.
  • U l a formed as a molded part decor and / or trim parts for a vehicle interior is known, comprising a decorative layer with a transparent lacquer layer and provided on the back of the lacquer layer decorative layer, such as a wood, especially a wood veneer, and / or a film and / or a fabric and / or a metal and / or a composite material, in particular carbon.
  • a carrier is arranged at the back of the decorative layer.
  • a light source for illuminating and / or transilluminating the lacquer layer is provided, wherein light emanating from the light source is laterally coupled into the lacquer layer.
  • a disadvantage of such moldings is that the light during further transport in the lacquer layer at least partially absorbed at the decorative layer and thus attenuated. It can also lead to unwanted light scattering on the decorative layer.
  • the appearance of the illuminated viewing side is dependent on the distance from the light source and may be affected by undesirable scattering effects on the decorative layer.
  • the object of the invention is to provide a new molded part, in particular a molded part illuminated over the entire surface, in which the appearance of the visible side is not adversely affected by further components of the molded part, for example the decorative layer. Further lies
  • the invention is based on the object of specifying a new method for producing such a molded part.
  • the molded part according to the invention comprises a decorative layer and a carrier arranged on a rear side of the decorative layer, in particular a plastic carrier.
  • the decorative layer in turn comprises a decorative layer and a light-conducting, in particular transparent, optical layer with a first refractive index.
  • the optical layer is arranged on a front side of the decorative layer designed as a visible side.
  • the optical layer may, for example, be a glass-optic layer.
  • At least one light source is provided for illuminating and / or illuminating the optical layer on or in the molded part.
  • the light source is arranged such that light emanating from the light source is coupled directly and / or indirectly laterally into the optical layer.
  • a light-conducting, in particular transparent, additional layer 17 with a second refractive index is furthermore provided in the decorative layer between the decorative layer and the optical layer, adjacent to the optical layer.
  • the first refractive index of the optical layer is greater than the second refractive index of the additional layer.
  • the advantages of the invention result in particular from the refractive index difference between the optical layer and the additional layer.
  • This refractive index difference causes a total reflection for light rays in the optical layer, at the interface to the additional layer, provided that the angle of incidence (angle to the surface normal) of the light rays at the boundary layer surface a certain value, namely the refractive index difference dependent critical angle of total reflection exceeds.
  • a light beam then does not enter the additional layer, but is almost completely reflected and thus remains in the optical layer. Below this critical angle, only part of the radiation at the interface is reflected and remains in the optical layer, the remainder enters the additional layer.
  • the additional layer with its smaller refractive index thus ensures that the light is not absorbed or at least to a lesser extent by the underlying layers, for example the decorative layer (in comparison to the non-provision of this additional layer).
  • the laterally irradiated light can propagate significantly further or over longer distances with at least nearly constant light intensity in the optical layer than in the case of a molded part without such additional layer.
  • moldings with a larger-area visible side are possible, which can be illuminated almost uniformly by the side light.
  • a development of the invention provides that light-scattering impurities are provided between the optical layer and the additional layer or in the additional layer.
  • These are preferably designed in such a way that light emitted by the light source is at least partially scattered such that this light is coupled out of the optical layer on the front side of the decorative layer formed as a visible side. In this way, for example, luminous symbols can be displayed on the visible side.
  • the impurities can be formed as continuous recesses in the additional layer.
  • continuous is understood to mean the extent over the entire thickness of the additional layer.
  • the recess is a hole through the additional layer.
  • the recesses are intended for the passage of light from the optical layer to the decorative layer and vice versa.
  • the recesses in the additional layer can be filled, for example, with the material of the optical layer.
  • the additional layer may be, for example, a printing layer or a film or a lacquer layer or may comprise.
  • a light-scattering and / or light-absorbing intermediate layer can be provided on the rear side of the additional layer.
  • the intermediate layer may be formed, for example, as a print layer and / or as a color layer.
  • the stains may be arranged and / or formed, in particular shaped, such that their arrangement and / or shape corresponds to a symbol on the side of the decorative layer that is designed as a visible side.
  • the light source can be provided on the side of the optical layer, in particular, be attached. But it is also possible, please include that at least one light guide is provided, one end of which ends laterally on the optical layer and the other end of which ends at the light source, the light source being preferably provided on the rear side of the support, in particular ,
  • the decorative layer may be a, preferably non-translucent, wood veneer or a preferably light-impermeable film or may comprise.
  • the optical layer may comprise PU R and / or PMMA and / or PC or may be formed of PU R and / or PMMA and / or PC.
  • a light-scattering and / or light-absorbing intermediate layer applied to the front of the decorative layer, in particular affiliated with the above-described moldings according to the invention can be produced.
  • a light-scattering and / or light-absorbing intermediate layer applied to the front of the decorative layer, in particular affiliated, is before the additional layer on the front of the decorative layer and / or the intermediate layer is applied.
  • the stains can be arranged and / or shaped in such a way that they correspond to a symbol on the side of the decorative layer that is designed as a visible side.
  • the light source can be provided laterally on the optical layer, in particular attached.
  • at least one light guide can be provided, in particular attached, one end of which terminates laterally on the optical layer and the other end terminates on the light source, wherein the light source is preferably provided on the rear side of the support, in particular.
  • the figure shows a section of a schematic cross-sectional view of a first embodiment of a molded part according to the invention. Corresponding parts and components are each denoted by the same reference numerals.
  • the figure shows a formed as a molded part 10 decorative part or trim part for a vehicle interior, comprising a decorative layer 11 and a carrier 12, for example, a plastic substrate, on a back side 13 of the decorative layer 11.
  • the decorative layer 11 comprises on the one hand a decorative layer 15 and the other a transparent Optic layer 16, for example, a glass optic layer, on a designed as a visible side front 14 of the decorative layer 11th
  • a light source 19 for illuminating and / or transilluminating the optical layer 16 is mounted on or in the molded part 10, wherein outgoing light from the light source 19 is coupled laterally into the optical layer 16.
  • a transparent additional layer 17 is arranged between the decorative layer 15 and the optical layer 16.
  • the transparent optical layer 16 has a first refractive index, the additional layer 17 a second refractive index, wherein the first refractive index is greater than the second refractive index.
  • the additional layer 17 has impurities 20 formed as continuous recesses, on which light emanating from the light source 19 is scattered and, among other things, is coupled out of the optical layer 16 on the front side 14 of the decorative layer 11 formed as a visible side.
  • the light is passed through the recesses 20 and scattered on a light-scattering intermediate layer 18, which is provided on the back 21 of the additional layer 17, inter alia adjacent to the recesses 20.
  • luminous symbols can be displayed.
  • the intermediate layer 18 can also be omitted, the scattering can then take place the decorative layer 15.
  • the arrows in the optical layer 16 schematically show how the light is guided through the optical layer 16 by total reflection at the interface with the additional layer 17 and is scattered in the impurity regions 20 and in this way is coupled out of the optical layer 16.
  • the additional layer 17 may be a printed layer, the decorative layer 15 an opaque wood veneer, and the optical layer 16 may be made of PUR.
  • the intermediate layer 18 may be formed as a print layer.
  • the impurities 20 are arranged such that in their entirety they correspond to a symbol to be displayed on the front side 14 of the decorative layer 11 designed as a visible side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

The invention relates to a moulded part (10), in particular a trim part or a lining part that is embodied as a moulded part for a vehicle interior, comprising a trim layer (11) and a support (12) arranged on a back side (13) of the trim layer (11), wherein the trim layer (11) comprises a trim ply (15) and a light-guiding optical layer (16) with a first refractive index, wherein the optical layer (16) is arranged on a front side (14) of the trim layer (11) that is embodied as a viewing side, wherein at least one light source (19) is provided on or in the moulded part (10) for illuminating and/or shining through the optical layer (16), wherein the light source (19) is arranged in such a way that the light emanating from the light source (19) is laterally coupled into the optical layer (16) in direct and/or indirect fashion. The invention is characterized in that a light-guiding additional layer (17) with a second refractive index is provided in the trim layer (11) between the trim ply (15) and the optical layer (16), adjacent to the optical layer (16), wherein the first refractive index of the optical layer (16) is greater than the second refractive index of the additional layer (17). Further, the invention relates to a method for producing a moulded part (10).

Description

DEKORTEIL FÜR EINEN FAHRZEUGINNENRAUM UND VERFAHREN ZUM HERSTELLEN EINES SOLCHEN FORMTEILS  DECORATIVE PART FOR A VEHICLE INTERIOR AND METHOD FOR PRODUCING SUCH A FORM PART
Beschreibung description
5 Die Erfindung betrifft ein Formteil, insbesondere ein als Formteil ausgebildetes Dekorteil und/oder Verkleidungsteil für einen Fahrzeuginnenraum und ein Verfahren zum Herstellen eines solchen Formteils. The invention relates to a molded part, in particular a formed as a molded part decorative part and / or trim part for a vehicle interior and a method for producing such a molded part.
Aus DE 20 2015 106 546 U l ist ein als Formteil ausgebildetes Dekor-0 und/oder Verkleidungsteile für einen Fahrzeuginnenraum bekannt, umfassend eine Dekorschicht mit einer transparenten Lackschicht und einer an der Rückseite der Lackschicht vorgesehenen Dekorlage, beispielsweise ein Holz, insbesondere ein Holzfurnier, und/oder eine Folie und/oder ein Gewebe und/oder ein Metall und/oder ein Verbundwerkstoff, insbesondere5 Carbon. An der Rückseite der Dekorlage wiederum ist ein Träger angeordnet. Ferner ist eine Lichtquelle zum Beleuchten und/oder Durchleuchten der Lackschicht vorgesehen, wobei von der Lichtquelle ausgehendes Licht seitlich in die Lackschicht eingekoppelt wird. 0 Nachteilig bei derartigen Formteilen ist, dass das Licht beim Weitertransport in der Lackschicht zumindest teilweise an der Dekorlage absorbiert und somit abgeschwächt wird. Auch kann es zu unerwünschter Lichtstreuung an der Dekorlage kommen. Eine gleichmäßige Lichtverteilung in Formteilen, insbesondere in großflächigen Formteilen, erweist sich somit5 als problematisch. Das Erscheinungsbild der erleuchteten Sichtseite ist vom Abstand von der Lichtquelle abhängig und kann durch unerwünschte Streueffekten an der Dekorlage beeinflusst sein. From DE 20 2015 106 546 U l a formed as a molded part decor and / or trim parts for a vehicle interior is known, comprising a decorative layer with a transparent lacquer layer and provided on the back of the lacquer layer decorative layer, such as a wood, especially a wood veneer, and / or a film and / or a fabric and / or a metal and / or a composite material, in particular carbon. In turn, a carrier is arranged at the back of the decorative layer. Furthermore, a light source for illuminating and / or transilluminating the lacquer layer is provided, wherein light emanating from the light source is laterally coupled into the lacquer layer. A disadvantage of such moldings is that the light during further transport in the lacquer layer at least partially absorbed at the decorative layer and thus attenuated. It can also lead to unwanted light scattering on the decorative layer. A uniform light distribution in molded parts, especially in large-scale moldings, thus turns 5 problematic. The appearance of the illuminated viewing side is dependent on the distance from the light source and may be affected by undesirable scattering effects on the decorative layer.
Der Erfindung liegt die Aufgabe zu Grunde, ein neues Formteil anzuge-0 ben, insbesondere ein vollflächig beleuchtetes Formteil, bei dem das Erscheinungsbild der Sichtseite nicht durch weitere Komponenten des Formteils, beispielsweise die Dekorlage, negativ beeinflusst wird. Ferner liegt der Erfindung die Aufgabe zu Grunde, ein neues Verfahren zum Herstellen eines solchen Formteils anzugeben. The object of the invention is to provide a new molded part, in particular a molded part illuminated over the entire surface, in which the appearance of the visible side is not adversely affected by further components of the molded part, for example the decorative layer. Further lies The invention is based on the object of specifying a new method for producing such a molded part.
Diese Aufgabe wird hinsichtlich des Formteils gelöst durch die Merkmale des Anspruchs 1 und hinsichtlich des Verfahrens zum Herstellen eines Formteils durch die Merkmale des Anspruchs 10. Vorteilhafte Ausgestaltungen und Weiterbildungen sind in den jeweils abhängigen Ansprüchen angegeben. Das erfindungsgemäße Formteil umfasst eine Dekorschicht und einen an einer Rückseite der Dekorschicht angeordneten Träger, insbesondere einen Kunststoffträger. Die Dekorschicht wiederum umfasst eine Dekorlage und eine lichtleitende, insbesondere transparente, Optikschicht mit einem ersten Brechungsindex. Die Optikschicht ist an einer als Sichtseite ausge- bildeten Vorderseite der Dekorschicht angeordnet ist. Bei der Optikschicht kann es sich beispielsweise um eine Glasoptikschicht handeln. This object is achieved with regard to the molded part by the features of claim 1 and with regard to the method for producing a molded part by the features of claim 10. Advantageous embodiments and further developments are specified in the respective dependent claims. The molded part according to the invention comprises a decorative layer and a carrier arranged on a rear side of the decorative layer, in particular a plastic carrier. The decorative layer in turn comprises a decorative layer and a light-conducting, in particular transparent, optical layer with a first refractive index. The optical layer is arranged on a front side of the decorative layer designed as a visible side. The optical layer may, for example, be a glass-optic layer.
Weiter ist wenigstens eine Lichtquelle zum Beleuchten und/oder Durchleuchten der Optikschicht am oder im Formteil vorgesehen. Die Lichtquel- le ist derart angeordnet, dass von der Lichtquelle ausgehendes Licht direkt und/oder indirekt seitlich in die Optikschicht eingekoppelt wird. Furthermore, at least one light source is provided for illuminating and / or illuminating the optical layer on or in the molded part. The light source is arranged such that light emanating from the light source is coupled directly and / or indirectly laterally into the optical layer.
Beim erfindungsgemäßen Formteil ist ferner in der Dekorschicht zwischen der Dekorlage und der Optikschicht, angrenzend an die Optikschicht, eine lichtleitende, insbesondere transparente, Zusatzschicht 17 mit einem zweiten Brechungsindex vorgesehen ist. Der erste Brechungsindex der Optikschicht ist größer als der zweite Brechungsindex der Zusatzschicht. In the molded part according to the invention, a light-conducting, in particular transparent, additional layer 17 with a second refractive index is furthermore provided in the decorative layer between the decorative layer and the optical layer, adjacent to the optical layer. The first refractive index of the optical layer is greater than the second refractive index of the additional layer.
Die Vorteile der Erfindung ergeben sich insbesondere aus den Brechungs- indexunterschied zwischen Optikschicht und Zusatzschicht. Dieser Brechungsindexunterschied bewirkt eine Totalreflexion für Lichtstrahlen in der Optikschicht, an der Grenzfläche zur Zusatzschicht, sofern der Einfallwinkel (Winkel zur Flächennormalen) der Lichtstrahlen an der Grenz- fläche einen bestimmten Wert, nämlich den vom Brechungsindexunterschied abhängigen Grenzwinkel der Totalreflexion, überschreitet. Ein Lichtstrahl tritt dann nicht in die Zusatzschicht ein, sondern wird nahezu vollständig reflektiert und verbliebt somit in der Optikschicht. Unterhalb dieses Grenzwinkels wir nur noch ein Teil der Strahlung an der Grenzfläche reflektiert und bleibt in der Optikschicht, der restliche Teil tritt in die Zusatzschicht ein. The advantages of the invention result in particular from the refractive index difference between the optical layer and the additional layer. This refractive index difference causes a total reflection for light rays in the optical layer, at the interface to the additional layer, provided that the angle of incidence (angle to the surface normal) of the light rays at the boundary layer surface a certain value, namely the refractive index difference dependent critical angle of total reflection exceeds. A light beam then does not enter the additional layer, but is almost completely reflected and thus remains in the optical layer. Below this critical angle, only part of the radiation at the interface is reflected and remains in the optical layer, the remainder enters the additional layer.
Die Zusatzschicht mit ihrem kleineren Brechungsindex sorgt somit dafür, dass das Licht nicht oder zumindest in geringerem Umfang von den darunterliegenden Schichten, beispielsweise der Dekorlage, absorbiert wird (im Vergleich zum Nichtvorsehen dieser Zusatzschicht). Auf diese Weise kann sich das seitlich eingestrahlte Licht aufgrund der Reflexion an den Grenzflächen der Optikschicht deutlich weiter oder über längere Distan- zen mit zumindest nahezu gleichbleibender Lichtstärke in der Optikschicht ausbreiten als bei einem Formteil ohne derartige Zusatzschicht. Dadurch sind Formteile mir großflächigeren Sichtseiten möglich, die sich nahezu gleichmäßig durch seitliches Lichteinstrahlen beleuchten lassen. Eine Weiterbildung der Erfindung sieht vor, dass zwischen Optikschicht und Zusatzschicht oder in der Zusatzschicht lichtstreuende Störstellen vorgesehen sind. Diese sind vorzugsweise derart ausgebildet, dass von der Lichtquelle ausgehendes Licht zumindest teilweise derart gestreut wird, dass dieses Licht an der als Sichtseite ausgebildeten Vorderseite der Dekorschicht aus der Optikschicht ausgekoppelt wird . Auf diese Weise lassen sich beispielsweise leuchtende Symbole an der Sichtseite darstellen. The additional layer with its smaller refractive index thus ensures that the light is not absorbed or at least to a lesser extent by the underlying layers, for example the decorative layer (in comparison to the non-provision of this additional layer). In this way, due to the reflection at the interfaces of the optical layer, the laterally irradiated light can propagate significantly further or over longer distances with at least nearly constant light intensity in the optical layer than in the case of a molded part without such additional layer. As a result, moldings with a larger-area visible side are possible, which can be illuminated almost uniformly by the side light. A development of the invention provides that light-scattering impurities are provided between the optical layer and the additional layer or in the additional layer. These are preferably designed in such a way that light emitted by the light source is at least partially scattered such that this light is coupled out of the optical layer on the front side of the decorative layer formed as a visible side. In this way, for example, luminous symbols can be displayed on the visible side.
Die Störstellen können als durchgehende Ausnehmungen in der Zusatz- schicht ausgebildet sein. Unter„durchgehend" wird hierbei die Erstre- ckung über die gesamte Dicke der Zusatzschicht verstanden. Mit anderen Worten : Die Ausnehmung ist ein Loch durch die Zusatzschicht hindurch. Die Ausnehmu ngen sind bestimmt zur Du rchleitu ng von Licht von der Optikschicht zu r Dekorlage u nd umgekehrt. The impurities can be formed as continuous recesses in the additional layer. In this case, "continuous" is understood to mean the extent over the entire thickness of the additional layer. In other words, the recess is a hole through the additional layer. The recesses are intended for the passage of light from the optical layer to the decorative layer and vice versa.
Die Ausnehmungen in der Zusatzschicht können beispielsweise mit dem Material der Optikschicht gefü llt sein . The recesses in the additional layer can be filled, for example, with the material of the optical layer.
Die Zusatzschicht kann beispielsweise eine Druckschicht oder eine Fol ie oder eine Lackschicht sein oder u mfassen. An der Rückseite der Zusatzschicht kann eine l ichtstreuende und/oder lichtabsorbierende Zwischenschicht vorgesehen sein . Die Zwischenschicht kann beispielsweise als Druckschicht und/oder als Farbschicht ausgebildet sein . Die Störstel len können derart angeordnet u nd/oder ausgebildet, insbesondere geformt sein, dass ihre Anordnung und/oder Form einem an der als Sichtseite ausgebildeten Vorderseite der Dekorschicht darzustel lenden Symbol entspricht. Die Lichtquelle kann seitlich an der Optikschicht vorgesehen, insbesondere angebracht sein. Es ist aber auch mög lich, dass mindestens ein Lichtleiter vorgesehen ist, dessen eines Ende seitlich an der Optikschicht endet und dessen anderes Ende an der Lichtq uel le endet, wobei die Lichtq uelle vorzugsweise an der Rückseite des Trägers vorgehsehen, insbe- sondere angebracht ist. The additional layer may be, for example, a printing layer or a film or a lacquer layer or may comprise. A light-scattering and / or light-absorbing intermediate layer can be provided on the rear side of the additional layer. The intermediate layer may be formed, for example, as a print layer and / or as a color layer. The stains may be arranged and / or formed, in particular shaped, such that their arrangement and / or shape corresponds to a symbol on the side of the decorative layer that is designed as a visible side. The light source can be provided on the side of the optical layer, in particular, be attached. But it is also possible, please include that at least one light guide is provided, one end of which ends laterally on the optical layer and the other end of which ends at the light source, the light source being preferably provided on the rear side of the support, in particular ,
Die Dekorlage kann ein, vorzugsweise l ichtundu rchlässiges, Holzfurnier oder eine, vorzugsweise lichtu nd urchlässiges, Folie sein oder u mfassen . Die Optikschicht kann PU R und/oder PMMA und/oder PC aufweisen oder aus PU R und/oder PMMA u nd/oder PC gebildet sein . Das erfindu ngsgemäße Verfahren zum Herstellen eines Formteils umfassend die Schritte : The decorative layer may be a, preferably non-translucent, wood veneer or a preferably light-impermeable film or may comprise. The optical layer may comprise PU R and / or PMMA and / or PC or may be formed of PU R and / or PMMA and / or PC. The method according to the invention for producing a molded article comprising the steps:
- Bereitstellen eines zu r Bildu ng der Dekorlage der Dekorschicht des Formteils vorhergesehenen Materials, insbesondere eines Holzfu rniers oder einer Folie,  Providing a material intended for forming the decorative layer of the decorative layer of the molded part, in particular a wooden foot or a foil,
- Aufbringen der Zusatzschicht auf die Vorderseite der Dekorlage, Applying the additional layer to the front of the decorative layer,
- Vorsehen mindestens einer Störstelle in der Reflexionsschicht du rch Einbringen einer Ausnehmu ng, vorzugsweise mittels Laserabtrag, in die Zusatzschicht, Provision of at least one impurity in the reflection layer you rch introducing a Ausnehmu ng, preferably by laser ablation, in the additional layer,
- Aufbringen, insbesondere Aufgießen, der Optikschicht auf die Zusatzschicht, Application, in particular pouring, of the optical layer onto the additional layer,
- H interspritzen des zu r Bild ung der Dekorschicht vorgesehenen Materials mittels Spritzg ießen mit einem Trägermaterial, insbesondere einem Kunststoff, zu m Ausbilden des Trägers,  Injecting the material provided for the image with the decorative layer by means of injection molding with a carrier material, in particular a plastic, to form the carrier;
- Vorsehen wenigstens einer Lichtquelle am oder im Formteil . - Provide at least one light source on or in the molding.
Mit diesem Verfahren können beispielsweise d ie vorstehend beschriebenen erfindu ngsgemäßen Formteile hergestel lt werden . Ergänzend kann vorgesehen sein, dass eine lichtstreuende und/oder lichtabsorbierende Zwischenschicht auf die Vorderseite der Dekorlage aufgebracht, insbesondere aufged ruckt, wird, bevor d ie Zusatzschicht auf die Vorderseite der Dekorlage u nd/oder der Zwischenschicht aufgebracht wird . With this method, for example, the above-described moldings according to the invention can be produced. In addition, it can be provided that a light-scattering and / or light-absorbing intermediate layer applied to the front of the decorative layer, in particular aufged, is before the additional layer on the front of the decorative layer and / or the intermediate layer is applied.
Die Störstel len können derart angeord net und/oder geformt werden, dass sie einem an der als Sichtseite ausgebildeten Vorderseite der Dekorschicht darzustel lenden Symbol entsprechen . Die Lichtquelle kann seitlich an der Optikschicht vorgesehen, insbesondere angebracht werden . Alternativ kann mindestens ein Lichtleiter vorgesehen, insbesondere angebracht werden, dessen eines Ende seitlich an der Optikschicht endet und dessen anderes Ende an der Lichtquelle endet, wobei die Lichtquelle vorzugsweise an der Rückseite des Trägers vorgesehen, insbesondere angebracht wird. The stains can be arranged and / or shaped in such a way that they correspond to a symbol on the side of the decorative layer that is designed as a visible side. The light source can be provided laterally on the optical layer, in particular attached. Alternatively, at least one light guide can be provided, in particular attached, one end of which terminates laterally on the optical layer and the other end terminates on the light source, wherein the light source is preferably provided on the rear side of the support, in particular.
Die Erfindung wird nachstehend auch hinsichtlich weiterer Merkmale und Vorteile anhand der Beschreibung von Ausführungsbeispielen und unter Bezugnahme auf die beiliegende, schematische Zeichnung näher erläu- tert. Die Figur zeigt einen Ausschnitt einer schematischen Querschnittsdarstellung eines ersten Ausführungsbeispiels eines erfindungsgemäßen Formteils. Einander entsprechende Teile und Komponenten sind jeweils mit den gleichen Bezugszeichen bezeichnet. Die Figur zeigt ein als Formteil 10 ausgebildetes Dekorteil oder Verkleidungsteil für einen Fahrzeuginnenraum, umfassend eine Dekorschicht 11 und einen Träger 12, beispielsweise einen Kunststoffträger, an einer Rückseite 13 der Dekorschicht 11. Die Dekorschicht 11 umfasst zum einen eine Dekorlage 15 und zum anderen eine transparente Optikschicht 16, beispielsweise eine Glasoptikschicht, an einer als Sichtseite ausgebildeten Vorderseite 14 der Dekorschicht 11. The invention will be explained below with respect to further features and advantages with reference to the description of exemplary embodiments and with reference to the accompanying schematic drawing. The figure shows a section of a schematic cross-sectional view of a first embodiment of a molded part according to the invention. Corresponding parts and components are each denoted by the same reference numerals. The figure shows a formed as a molded part 10 decorative part or trim part for a vehicle interior, comprising a decorative layer 11 and a carrier 12, for example, a plastic substrate, on a back side 13 of the decorative layer 11. The decorative layer 11 comprises on the one hand a decorative layer 15 and the other a transparent Optic layer 16, for example, a glass optic layer, on a designed as a visible side front 14 of the decorative layer 11th
Seitlich an der Optikschicht 16 ist eine Lichtquelle 19 zum Beleuchten und/oder Durchleuchten der Optikschicht 16 am oder im Formteil 10 angebracht, wobei von der Lichtquelle 19 ausgehendes Licht seitlich in die Optikschicht 16 eingekoppelt wird. On the side of the optical layer 16, a light source 19 for illuminating and / or transilluminating the optical layer 16 is mounted on or in the molded part 10, wherein outgoing light from the light source 19 is coupled laterally into the optical layer 16.
In der Dekorschicht ist zwischen der Dekorlage 15 und der Optikschicht 16 eine transparente Zusatzschicht 17 angeordnet. Die transparente Optikschicht 16 weist einen ersten Brechungsindex auf, die Zusatzschicht 17 einen zweiten Brechungsindex, wobei der erste Brechungsindex größer als der zweite Brechungsindex ist. Dies ermöglicht eine Totalreflexion des von der Lichtquelle 19 ausgehenden und in die Optikschicht 16 eingekoppelten Lichts an der Grenzfläche zur Zusatzschicht 17, sofern der Einfallwinkel (Winkel zur Flächennormalen) der Lichtstrahlen an der Grenzfläche einen bestimmten Wert, nämlich den vom Brechungsindexunterschied abhängigen Grenzwinkel der Totalreflexion, überschreitet. Das totalreflektierte Licht verbleibt dann in der Optikschicht 16 und wird in dieser zumin- dest nahezu verlustfrei weitertransportiert. In the decorative layer, a transparent additional layer 17 is arranged between the decorative layer 15 and the optical layer 16. The transparent optical layer 16 has a first refractive index, the additional layer 17 a second refractive index, wherein the first refractive index is greater than the second refractive index. This allows total reflection of the light emanating from the light source 19 and coupled into the optical layer 16 light at the interface to the additional layer 17, provided that the angle of incidence (angle to the surface normal) of the light rays at the interface a certain value, namely the critical angle of refraction difference limiting angle of total reflection, exceeds. The totally reflected light then remains in the optical layer 16 and is transported further in this at least virtually lossless.
Die Zusatzschicht 17 weist als durchgehende Ausnehmungen ausgebildete Störstellen 20 auf, an denen von der Lichtquelle 19 ausgehendes Licht gestreut wird und unter anderem an der als Sichtseite ausgebildeten Vorder- seite 14 der Dekorschicht 11 aus der Optikschicht 16 ausgekoppelt wird. Hierzu wird das Licht durch die Ausnehmungen 20 hindurch geleitet und an einer lichtstreuenden Zwischenschicht 18 gestreut, die an der Rückseite 21 der Zusatzschicht 17, unter anderem angrenzend an die Ausnehmungen 20, vorgesehen ist. Auf diese Weise lassen sich beispielsweise leuchtende Sym- bole darstellen. Alternativ kann die Zwischenschicht 18 auch entfallen, die Streuung kann dann der Dekorlage 15 erfolgen. The additional layer 17 has impurities 20 formed as continuous recesses, on which light emanating from the light source 19 is scattered and, among other things, is coupled out of the optical layer 16 on the front side 14 of the decorative layer 11 formed as a visible side. For this purpose, the light is passed through the recesses 20 and scattered on a light-scattering intermediate layer 18, which is provided on the back 21 of the additional layer 17, inter alia adjacent to the recesses 20. In this way, for example, luminous symbols can be displayed. Alternatively, the intermediate layer 18 can also be omitted, the scattering can then take place the decorative layer 15.
Die Pfeile in der Optikschicht 16 zeigen schematisch, wie das Licht zum einen durch Totalreflexion an der Grenzfläche zur Zusatzschicht 17 durch die Optikschicht 16 geleitet wird und zum anderen in den Störstellen 20 gestreut und auf diese Weise aus der Optikschicht 16 ausgekoppelt wird. The arrows in the optical layer 16 schematically show how the light is guided through the optical layer 16 by total reflection at the interface with the additional layer 17 and is scattered in the impurity regions 20 and in this way is coupled out of the optical layer 16.
Die Zusatzschicht 17 kann eine Druckschicht sein, die Dekorlage 15 ein lichtundurchlässiges Holzfurnier, und die Optikschicht 16 kann aus PUR ge- bildet sein. Die Zwischenschicht 18 kann als Druckschicht ausgebildet sein. Die Störstellen 20 sind derart angeordnet, dass sie in ihrer Gesamtheit einem an der als Sichtseite ausgebildeten Vorderseite 14 der Dekorschicht 11 darzustellendem Symbol entsprechen. The additional layer 17 may be a printed layer, the decorative layer 15 an opaque wood veneer, and the optical layer 16 may be made of PUR. The intermediate layer 18 may be formed as a print layer. The impurities 20 are arranged such that in their entirety they correspond to a symbol to be displayed on the front side 14 of the decorative layer 11 designed as a visible side.
Bezugszeichen liste Reference number list
10 Formteil 10 molding
11 Dekorschicht  11 decorative layer
12 Träger  12 carriers
13 Rückseite der Dekorschicht 11 13 back of the decorative layer 11
14 Vorderseite der Dekorschicht 1114 front side of the decorative layer 11
15 Dekorlage 15 decorative layer
16 Optikschicht  16 optical layer
17 Zusatzschicht  17 additional layer
18 Zwischenschicht  18 interlayer
19 Lichtquelle  19 light source
20 Störstelle  20 defect
21 Rückseite der Zusatzschicht 17 21 back side of the additional layer 17
22 Rückseite des Trägers 12 22 Rear of the carrier 12

Claims

Patentansprüche claims
1. Formteil (10), insbesondere als Formteil ausgebildetes Dekorteil oder Verkleidungsteil für einen Fahrzeuginnenraum, 1. molding (10), in particular formed as a molded part decorative part or trim part for a vehicle interior,
umfassend eine Dekorschicht (11) und einen an einer Rückseite (13) der Dekorschicht (11) angeordneten Träger (12),  comprising a decorative layer (11) and a carrier (12) arranged on a rear side (13) of the decorative layer (11),
wobei die Dekorschicht (11) eine Dekorlage (15) und eine lichtleitende Optikschicht (16) mit einem ersten Brechungsindex umfasst, wobei die Optikschicht (16) an einer als Sichtseite ausgebildeten Vor- derseite (14) der Dekorschicht (11) angeordnet ist,  wherein the decorative layer (11) comprises a decorative layer (15) and a light-conducting optical layer (16) having a first refractive index, the optical layer (16) being arranged on a front side (14) of the decorative layer (11) formed as a visible side,
wobei wenigstens eine Lichtquelle (19) zum Beleuchten und/oder Durchleuchten der Optikschicht (16) am oder im Formteil (10) vorgesehen ist,  wherein at least one light source (19) is provided for illuminating and / or transilluminating the optical layer (16) on or in the molded part (10),
wobei die Lichtquelle (19) derart angeordnet ist, dass von der Licht- quelle (19) ausgehendes Licht direkt und/oder indirekt seitlich in die wherein the light source (19) is arranged such that light emanating from the light source (19) is directed directly and / or indirectly laterally into the light source
Optikschicht (16) eingekoppelt wird, Optics layer (16) is coupled,
dadurch gekennzeichnet,  characterized,
dass in der Dekorschicht (11) zwischen der Dekorlage (15) und der Optikschicht (16), angrenzend an die Optikschicht (16), eine lichtlei- tende Zusatzschicht (17) mit einem zweiten Brechungsindex vorgesehen ist,  in that a light-conducting additional layer (17) with a second refractive index is provided in the decorative layer (11) between the decorative layer (15) and the optical layer (16), adjacent to the optical layer (16),
wobei der erste Brechungsindex der Optikschicht (16) größer als der zweite Brechungsindex der Zusatzschicht (17) ist. 2. Formteil nach Anspruch 1,  wherein the first refractive index of the optical layer (16) is greater than the second refractive index of the additional layer (17). 2. molding according to claim 1,
dadurch gekennzeichnet, dass  characterized in that
zwischen Optikschicht (16) und Zusatzschicht (17) oder in der Zusatzschicht (17) lichtstreuende Störstellen (20) vorgesehen sind. 3. Formteil nach Anspruch 1,  between optical layer (16) and additional layer (17) or in the additional layer (17) light-scattering impurities (20) are provided. 3. molding according to claim 1,
dadurch gekennzeichnet, dass  characterized in that
die Störstellen (20) als durchgehende Ausnehmungen in der Zusatzschicht (17) ausgebildet sind.  the impurities (20) are formed as continuous recesses in the additional layer (17).
Formteil nach Anspruch 3, Molded part according to claim 3,
dadurch gekennzeichnet, dass characterized in that
die Ausnehmungen mit dem Material der Optikschicht gefüllt sind. the recesses are filled with the material of the optical layer.
Formteil nach einem der vorhergehenden Ansprüche, Molding according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Zusatzschicht (17) eine Druckschicht oder eine Folie oder eine Lackschicht ist oder umfasst. the additional layer (17) is or comprises a printing layer or a film or a lacquer layer.
Formteil nach einem der vorhergehenden Ansprüche, Molding according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
an der Rückseite (21) der Zusatzschicht (17) eine lichtstreuende und/oder lichtabsorbierende Zwischenschicht (18) vorgesehen ist. a light-scattering and / or light-absorbing intermediate layer (18) is provided on the rear side (21) of the additional layer (17).
Formteil nach einem der vorhergehenden Ansprüche, Molding according to one of the preceding claims,
dadurch gekennzeichnet, dass characterized in that
die Störstellen (20) derart angeordnet und/oder ausgebildet sind, dass ihre Anordnung und/oder Form einem an der als Sichtseite ausgebildeten Vorderseite (14) der Dekorschicht (11) darzustellenden Symbol entspricht. the impurities (20) are arranged and / or formed in such a way that their arrangement and / or shape corresponds to a symbol to be displayed on the front side (14) of the decorative layer (11) which is designed as a visible side.
Formteil nach einem der vorhergehenden Ansprüche, Molding according to one of the preceding claims,
dadurch gekennzeichnet, characterized,
dass die Lichtquelle (19) seitlich an der Optikschicht (16) vorgesehen ist, oder that the light source (19) is provided laterally on the optical layer (16), or
dass mindestens ein Lichtleiter vorgesehen ist, dessen eines Ende seitlich an der Optikschicht (16) endet und dessen anderes Ende an der Lichtquelle (19) endet, wobei die Lichtquelle (19) vorzugsweise an der Rückseite (22) des Trägers (12) vorgehsehen ist. in that at least one light guide is provided, whose one end terminates laterally at the optical layer (16) and whose other end terminates at the light source (19), wherein the light source (19) is preferably provided at the rear side (22) of the support (12) ,
Formteil nach einem der vorhergehenden Ansprüche Molded part according to one of the preceding claims
dadurch gekennzeichnet, dass die Dekorlage (15) ein Holzfurnier oder eine Folie ist oder um- fasst, und/oder characterized, the decorative layer (15) is or comprises a wood veneer or a foil, and / or
dass die Optikschicht (16) PUR und/oder PMMA und/oder PC aufweist oder aus PUR und/oder PMMA und/oder PC gebildet ist.  the optical layer (16) comprises PUR and / or PMMA and / or PC or is formed from PUR and / or PMMA and / or PC.
Verfahren zum Herstellen eines Formteils Method for producing a molded part
(10) umfassend die Schritte:(10) comprising the steps:
- Bereitstellen eines zur Bildung der Dekorlage (15) der Dekorschicht (11) des Formteils (11) vorhergesehenen Materials, Providing a material intended for forming the decorative layer (15) of the decorative layer (11) of the molded part (11),
- Aufbringen der Zusatzschicht (17) auf die Vorderseite der Dekorlage (15),  - Applying the additional layer (17) on the front of the decorative layer (15),
- Vorsehen mindestens einer Störstelle (20) in der Reflexionsschicht (17) durch Einbringen einer Ausnehmung (20) in die Zusatzschicht (17),  Providing at least one impurity (20) in the reflection layer (17) by introducing a recess (20) into the additional layer (17),
- Aufbringen der Optikschicht (16) auf die Zusatzschicht (17),  Applying the optical layer (16) to the additional layer (17),
- Hinterspritzen des zur Bildung der Dekorschicht  - Injection of the formation of the decorative layer
(11) vorgesehenen Materials mittels Spritzgießen mit einem Trägermaterial zum Ausbilden des Trägers (11) provided by means of injection molding with a carrier material for forming the carrier
(12), (12)
- Vorsehen wenigstens einer Lichtquelle (19) am oder im Formteil.  - Provide at least one light source (19) on or in the molding.
Verfahren nach Anspruch 10, Method according to claim 10,
dadurch gekennzeichnet, dass  characterized in that
eine lichtstreuende und/oder lichtabsorbierende Zwischenschicht (18) auf die Vorderseite der Dekorlage (15) aufgebracht wird, bevor die Zusatzschicht (17) auf die Vorderseite der Dekorlage (15) und/oder der Zwischenschicht (18) aufgebracht wird.  a light-scattering and / or light-absorbing intermediate layer (18) is applied to the front side of the decorative layer (15) before the additional layer (17) is applied to the front side of the decorative layer (15) and / or the intermediate layer (18).
Verfahren nach Anspruch 10 oder 11, Method according to claim 10 or 11,
dadurch gekennzeichnet, dass  characterized in that
die Störstellen (20) derart angeordnet und/oder geformt werden, dass sie einem an der als Sichtseite ausgebildeten Vorderseite (14) der Dekorschicht (11) darzustellendem Symbol entsprechen.  the defects (20) are arranged and / or shaped in such a way that they correspond to a symbol to be displayed on the front side (14) of the decorative layer (11) which is designed as a visible side.
13. Verfahren nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, 13. The method according to any one of claims 10 to 12, characterized,
dass die Lichtquelle (19) seitlich an der Optikschicht (16) vorgesehen wird, oder that the light source (19) is provided laterally on the optical layer (16), or
dass mindestens ein Lichtleiter vorgesehen wird, dessen eines Ende seitlich an der Optikschicht (16) endet und dessen anderes Ende an der Lichtquelle (19) endet, wobei die Lichtquelle (19) vorzugsweise an der Rückseite (22) des Trägers (12) vorgesehen wird. in that at least one light guide is provided whose one end ends laterally at the optical layer (16) and whose other end terminates at the light source (19), wherein the light source (19) is preferably provided at the rear side (22) of the support (12) ,
EP18782341.4A 2017-09-27 2018-09-24 Trim part for a vehicle interior and method for producing such a moulded part Active EP3509911B1 (en)

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PCT/EP2018/075806 WO2019063483A1 (en) 2017-09-27 2018-09-24 Trim part for a vehicle interior and method for producing such a moulded part

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US11186222B2 (en) 2021-11-30
WO2019063483A1 (en) 2019-04-04

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